Updated libmodplug packages fixes security vulnerabilities

Description

An integer overflow within the "abc_set_parts()" function
(src/load_abc.cpp) can be exploited to corrupt heap memory via a specially
crafted ABC file (CVE-2013-4233).
An error within the "abc_MIDI_drum()" and "abc_MIDI_gchord()" functions
(src/load_abc.cpp) can be exploited to cause a buffer overflow via a
specially crafted ABC file (CVE-2013-4234).